TY - CPAPER AU - T Opriessnig, HG Shen, PG Halbur TI - Prevalence and phylogenetic analysis of the current PCV2 genotype 5 years after implementation of widespread vaccination programs in the United States T2 - International Pig Veterinary Society Congress DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2012 DA - 2012/06/01 L1 - https://www.aasv.org/library/swineinfo/Content/IPVS/2012/105.pdf SE - Virology & Viral Diseases ER -